1

Find the cause:
Shampoos might be more appropriate if its actually seborrhea. Eczema calls for a search as to its cause and correcting whatever it is -- you may even be allergic to a hair care product.
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Dandruff is when dead skin cells from the scalp shed. As skin cells die a small amount of flaking is normal. Some people experience an unusually large amount of flaking either chronically or as a result of certain triggers.
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2

Shampoo for seb derm:
Selsun blue and neutrogena t-gel are excellent shampoos for mild seborrheic dermatitis. Prescription Nizoral (ketoconazole) shampoo tends to be somewhat better than otc products, however, they all treat the seb derm somewhat differently, so i recommend alternating two or three shampoos when treating seborrheic dermatitis and washing hair 3-7 times a week if possible.
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3

Treatment of lice:
requires accurate identification of nits & / or lice. A pediculicide is usually used- OTC like Nix (permethrin) or RID or prescription meds like lindane or malathion. Work carefully through hair & remove individual nits. Purchase a special lice nit comb to aid you. Check for nits & remove as seen over the next 7 to 10 days. If there are nits after 7 to 10 days – a 2nd pediculicide tx may be needed.
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Shampoos:
Shampoos remove much more hair oil than regular soap, and it's important that you apply a hair conditioner after shampooing to restore normal hair texture. If a dermatologist doesn't find any medical problems causing hair loss, I recommend that you have a skilled beautician evaluate your hair status and instruct you on proper hair care techniques.
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Shouldn't cause any:
The Nizoral (ketoconazole) should not cause any problems in the scrotal area. The Nizoral (ketoconazole) is an anti-fungal shampoo, so could help with jock itch in the scrotal area. The selsun blue is selenium- more for the scalp dryness and therefore helps the dandruff.
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12

Serious Rx:
You've already got acnescarring. This would not have happened if you'd gotten cared for by a scientific physician. Acne is a serious, chronic, non-lifestyle-related disease, a major personal and professional liability, that can be managed by 21st century care. With many blackheads, a topical retinoic acid derivative is a good choice; since scarring's present, likely an antibiotic also. Go for it.
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14

Blue Star is:
Camphor and lard. I don't see how either of those things would get rid of a fungus. If you know you have a fungus, use an otc anti-fungal product like lotrimin, Lamisil or tinactin (tolnaftate) 2x / day for at least 30 days. Your fungus will clear up in 3-5 days, but since fungal spores live 30 days, you need to use it that long or it'll recur.
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15

Blepharitis:
Sounds like you have blepharitis, sometimes referred to as dandruff of the eyelashes. I have many patient that have problems with baby shampoo scrubs. I recommend ocusoft lid scrubs. If this does not take care of it, then you may need an antibiotic and possibly steroid drop or combination to treat the condition. Oral omega 3's can help the health of the eyelid margin as well.
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17

Nizoral (ketoconazole) could work:
But this is primarily intended to treat fungal infections. Have you seen a dermatologist to ensure that this is not a condition other that may benefit from a more specific therapy?
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18

Dandruff blues:
Dear KMcClure,
Dandruff can be caused by dry skin, allergies, fungal infection, or irritated skin. I would recommend to alternate shampoos between an anti-dandruff shampoo and non anti-dandruff shampoo. If your dandruff is already controlled using selsun blue 2-3x a week should work. For natural anti-dandruff products look for a shampoo with tea tree oil or even an essential oil of it.
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20

Probably won't work:
It probably won't be very effective. It can work for tinea versicolor, but is less likely to work for tinea corporis (ringworm), which requires topical or oral antifungal agents.
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